初始值清除后,如何在输入栏中输入新值?
问题描述:
目标是使用调用java脚本函数清除字段(this.id)的ON CLICK事件清除字段清除字段然后可以接收新值。当按下UPDATE按钮时,数据库用新值更新。清除现场功能成功清除现场,如何输入新值?初始值清除后,如何在输入栏中输入新值?
<html>
<head>
<script src="JavaScript/getVal.js" type="text/javascript"></script>
</head>
<body>
<a href="poll.html">Poll</a>
<?php
$connection = mysqli_connect("localhost", "root", "");
mysqli_select_db($connection, "ukelection2015");
$rs = mysqli_query($connection, "select * from poll");
?>
<hr>
<table border=1 id="myTable">
<tr>
<th>Name</th>
<th>Value</th>
<th>Color</th>
<th></th>
<th> </th>
</tr>
<?php
$id = 0;
while ($row = mysqli_fetch_array($rs)) {
print("<form method= 'post' action= 'updatePoll.php'>");
for ($x = 0; $x <= 2; $x++) {
if ($x == 0) {
print("<tr>");
} else {
print("<td>" . $row['name'] . "</td>" . "<td id= '".$id."' value = '" . $row['value'] . "' onclick = 'clearField(this.id)'>" . $row['value'] . "</td>" . "<td>" . $row['color'] . "</td>" . "<td><a href = ''>Update</a></td>");
$x++;
if ($x == 1) {
print "</tr>";
}
$id++;
}
}
// this hidden field is used in updatePoll.php to get the party name to update (i.e. $name=$_POST['name'];)
/* print("<input type='hidden' name ='name' value={$row['name']}>"); */
print("<tr>");
// name
// value
// color
/* print("<td><input type='submit' value='Update' onclick='alertMsg()'/></td>"); */
print("</tr>");
print("</form>");
}
mysqli_close($connection);
?>
</table>
</body>
</html>
This is the javascript function
/*
* To change this license header, choose License Headers in Project Properties.
* To change this template file, choose Tools | Templates
* and open the template in the editor.
*/
function clearField(anId) {
document.getElementById(anId).innerHTML = 0;
}
答
您可以在调用clearField
函数时将新值作为参数传递。然后,而不是在函数定义的innerHTML设置为0,可以设置innerHTML来新的价值document.getElementById(anId).innerHTML = newValue
答
,这会很有帮助
<script type="text/javascript>
function clearField(anId) {
document.getElementById(anId).innerHTML = 0;
}
</script>
答
既然你创建一个四每一行,你可以将要修改的元素的ID添加为隐藏的输入,并使您想要更改文本框编号的字段。当你点击更新时,只需提交表单并在数据库中更新即可。
谢谢你们,你们指出了我的正确方向。我想我已经找到了答案。这是一个html5属性; contenteditable ='true'我插入的内容如下 – Tony75
print(“”。$ row ['name']。“”。“